Wind bung for melting furnaces



D. S. BARROWS.

WIND BUNG FOR Mmme FURNACES.

mlww;

a ite-1mm;

entree star r DONAL-D S. BARRO'W'S, OF ROCHESTER, INEVI YORK.

WIND BUNG FOR TMELTING FURNACES.

Specification of Letters Patent.

Paton ted ll'lay M5, 'ifiZZ.

Application filed March 1'7, 1920. Serial No. 366,568.

by declare the following 'to be a full, clear,

and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

The invention, broadly stated, relates to furnaces and more particularlyto improvements in'the construction of one or more of the removable roofmembers used in that type of furnace which is adapted to re-melt pigiron with steel, cast iron or malleable iron scrap, the re-melted metalbeing used in the production oi? grey or malleable iron castings.

The principal object of my invention is to provide an air supplying roofmember or wind bung for use in connection with the type of furnace setforth above, said. member preferably comprising metallic side members, ametallic closure or top member, and heat resisting lining members, thelatter being arranged to provide openings to permit the escape oi airfrom the member or bung.

Another object of my invention is to pro vide a removable root memberfor melting furnaces having a plurality of spaced metal frame memberseach of which is provided at opposite ends with clamping means forholding the heat-resisting lining members or bricks in assembledposition.

Still another object of the invention is to provide a removable ro'ofmember or bung having a pair of spaced side members each of which isprovided with upper and lower flanges, the said upper flanges affordingmeans for connecting a metallic cover plate thereto, the said lowerflanges at'ording a wide bearing area for the lining members or bricks,

A still further object of the invention is to arrange the heat resistinglining members of a furnace bung so that there is provided a series ofopenings therethrough to permit the escape of air from the said bung.

Other objects of the invention will appear from the more detaileddescription of the flanges 5 of the I-beams 2, 2.

same when taken in connection with the accompanying drawing, in which,-

Figure 1 is a top plan View, partially in section of a portion of a windbung constructed in accordance ith my invention.

Fig. 2 is a side elevation of the structure illustrated in Fig. 1.

Fig. 3 is a side elevation of the opposite end of the wind bung fromthat shown in Fig. 2; and

Fig. 4 is a transverse section taken on line 4-4 of Fig. 2.

Throughout the specificationand drawings like parts are designated bylike reference characters.

The numeral 1 designates the root memher or bung which preferablycomprises a plurality of flanged side members 2, 2, which maybe tormedfrom any commercially rolled members and which are here shown as I-beams. To the outer ends of each of the l"- beams 2 is connected anadiusting clamping device 3, illustrated and described in my copendingapplication Serial No. 313,986, filed July 29, 1919. These clampingdevices are preferably employed at each end. of each beam, and areadapted to hold the lining bricks 4: in close contact with the lowerFlach clamping device is providedwith a pivoted shoe 6 adapted to engagethe taco of the outermost brick 4. The clamping members through theinstrumentality of the pivoted shoes 6 transmit the pressure from eachclamp through the center line of the lining bricks practically parallelto the face of the lower flange 5. of the I-beams Q and hence the liningbricks are securely clamped to the frame members without any tendency toseparate at either their upper or lower portions, as is fully describedin the application above set forth.

The top flanges 7 of the said I-beams are preferably united by means ofa plate 8 which extends transversely from flange to flange and is firmlyconnected thereto, as for example, by rivets 9. At one end of the bungframe adjacent the end of the plate 8 there is provided a baflie orclosure plate 10 which extends from the cover plate to the lining bricks4t. At the opposite end of the bung frame the plate 8 preferablyterminates at a distance from the end of the members 2, and interposedbetween the end of the plate 8 and the baffle plate is the inlet pipe 13 hereinafter more fully described. The said inlet pipe 13 is providedwith a base member 11. adapted to fit the upper surface of the 1 beams 2and to thus form. in effect a continuation of the plate 8. It will thusbe seen that the bung frame comprises the side members 2, the top member8, the baffle plates 10 and 12 and the base member 1]. of the inlet pipe18, and that these members are so connected and arranged as to form abox or hollow frame closed on three sides and at either end.

The bricks a which line the open face of the bung frame between theclosure or baffle plates 10 and 12 are not continuous as are the bricksi, but are of tWo sizes and are of such length that two of these bricksof un even length when placed end to end must be separated a slightamount or spaced apart in order that the ends of the bricks will er:-tend to the outer ends of the lower flanges of the members 2. Thearrangement of these bricks is clearly shown in Figs. 1 and 2. The spacebetween each pair of bricks of unequal length provides outlet openings14 extending from the hollow box or frame member, and these openings Mare in staggered relation, as clearly shown in Figs. 1 and 4E. Byemploying bricks which are com paratively narrow in width I obtain bythis staggered relation the effect of two continuous Wind slotsextending the full length of the bung between the baffle plates, and atthe same time avoid the necessity for using and forming special briclsor for cutting holes through the ordinary form of bricks.

The Wind bung is provided with a clevis or ring bolt 15 to engage thehook of the derrick member to permit the removal or replacement of thebung on the furnace wall;

It will be noted that adjacent the inlet pipe 13 the inwardly extendingportions of the top flanges 7 of the beams 2 are cut away as shown at 16so as not to limit the opening from the pipe 13.

Having now fully described my invention, what I claim and desire tosecure by Letters Patent is 1. ln a furnace bung, the combination with aplurality of flanged members, of means for connecting said members toform a chamber therebetween, a lining of fireresisting material engagingsaid flanged members, means for holding said lining in position, meansfor admitting air to said chamber, and a plurality of staggered slots insaid lining member to permit the escape of air from said chamber.

2. In a furnace hung, the combination with the frame member, of liningmembers comprising a plurality of alternately arranged pairs of firebricks, the adjacent ends of each pair of bricks being spaced apart toprovide openings extending through said lining members, and means forconnecting the said frame members to form a chamber therebetween, andmeans for admitting air to said chamber.

3. In a furnace bung, the combination with longitudinally extendingframe members, of means for connecting said frame members intermediatethe ends thereof to form therewith a hollow chamber, and lining bricksclosing the under side of said chamber, said bricks being of differentlengths and being arranged in alternate pairs, the adjacent ends of eachpair being spaced apart to form an outlet from said chamber, means foradmitting air to said chamber, and means for maintaining said liningmembers in position.

In testimony whereof I affixmy signature.

DONALD S. BARROVVS.

